<template>
  <div :class="className" :style="{height:height,width:width}" />
</template>

<script>
import echarts from 'echarts'
require('echarts/theme/macarons') // echarts theme
import resize from '../mixins/resize'

export default {
	name:'PieChart',
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: 'chart'
    },
    width: {
      type: String,
      default: '100%'
    },
    height: {
      type: String,
      default: '300px'
    },
		autoResize: {
		  type: Boolean,
		  default: true,
		},
		chartData: {
		  type: Object,
		  required: true,
		},
  },
  data() {
    return {
      chart: null
    }
  },
	watch: {
	  chartData: {
	    deep: true,
	    handler(val) {
	      this.setOptions(val);
	    },
	  },
	},
  mounted() {
    this.$nextTick(() => {
      this.initChart()
    })
  },
  beforeDestroy() {
    if (!this.chart) {
      return
    }
    this.chart.dispose()
    this.chart = null
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, 'macarons');
			this.setOptions(this.chartData);
		},
		setOptions({ expectedData, actualData } = {}) {
      this.chart.setOption({
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)'
        },
        legend: {
          left: 'center',
          bottom: '10',
          data: actualData
        },
        calculable: true,
        series: [
          {
            name: '营业额',
            type: 'pie',
            radius: [50, 95],
            center: ['50%', '40%'],
            data:expectedData,
            animationEasing: 'cubicInOut',
            animationDuration: 2600
          }
        ]
      })
    }
  }
}
</script>
